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Technical Data Sheet
2-172N304-75 ✓ Verified by PartsTable
· ORING SEAL
WHAT YOU NEED TO KNOW
Material determines chemical compatibility Standard durometer is 70 Shore A
Wrong material = catastrophic seal failure
PRODUCT OVERVIEW

The O-RING is a the manufacturer industrial component. Key specifications include material: RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR, hardness_rating: 75.0 SHORE DUROMETER A NOMINAL, outside_diameter: 8.387 INCHES MINIMUM AND 8.499 INCHES MAXIMUM IN, center_hole_diameter: 8.187 INCHES MINIMUM AND 8.287 INCHES MAXIMUM IN, cross-sectional_height: 0.100 INCHES MINIMUM AND 0.106 INCHES MAXIMUM IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5331-01-023-7632, indicating validated use in U.S. government and defense logistics supply chains. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels.

Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
2-172N304-75
NSN: 5331-01-023-7632
FSC: 5331 — O-RING
CAGE: 02697 — PARKER-HANNIFIN CORP DIV O-RING DIVISION (USA)
SPECIFICATIONS
materialRUBBER BUTADIENE-ACRYLONITRILE CLASS NBR
hardness_rating75.0 SHORE DUROMETER A NOMINAL
outside_diameter8.387 INCHES MINIMUM AND 8.499 INCHES MAXIMUM IN
center_hole_diameter8.187 INCHES MINIMUM AND 8.287 INCHES MAXIMUM IN
cross-sectional_height0.100 INCHES MINIMUM AND 0.106 INCHES MAXIMUM IN
NSN5331-01-023-7632
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 2-172N304-75 MFR: OEM ⚠ VERIFY BEFORE ORDERING Wrong material = failure. Viton for oil/fuel, EPDM for water/steam, Buna-N for general purpose, Silicone for food-grade. Chemical incompatibility causes swelling, brittleness, or rapid degradation ✓ BROKER TIP Durometer (hardness) affects sealing pressure tolerance. Higher Shore A = harder = higher pressure. Standard durometer is 70A — verify if application requires different hardness PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
CENTER HOLE DIAMETER: 8.187 INCHES MINIMUM AND 8.287 INCHES MAXIMUM IN
HARDNESS RATING: 75.0 SHORE DUROMETER A NOMINAL
CROSS-SECTIONAL HEIGHT: 0.100 INCHES MINIMUM AND 0.106 INCHES MAXIMUM IN
MATERIAL: RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR
OUTSIDE DIAMETER: 8.387 INCHES MINIMUM AND 8.499 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS (FLIS)
CENTER HOLE DIAMETER8.187 INCHES MINIMUM AND 8.287 INCHES MAXIMUM IN
HARDNESS RATING75.0 SHORE DUROMETER A NOMINAL
CROSS-SECTIONAL HEIGHT0.100 INCHES MINIMUM AND 0.106 INCHES MAXIMUM IN
MATERIALRUBBER BUTADIENE-ACRYLONITRILE CLASS NBR
OUTSIDE DIAMETER8.387 INCHES MINIMUM AND 8.499 INCHES MAXIMUM IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 6
AS568-172Interchangeable
interchangeable cross-reference
interchangeable
AMS3304Interchangeable
interchangeable cross-reference
interchangeable
2-172-BUNA-NInterchangeable
Same NIIN cross-reference
interchangeable
01-435-0296-5 PIECE 98Interchangeable
Same NIIN cross-reference
interchangeable
ARP568-172MILP2 5732Interchangeable
Same NIIN cross-reference
interchangeable
AS568-172MIL-P-25732Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 2-172N304-75?
2-172N304-75 is a O-RING.
What parts can replace 2-172N304-75?
There are 6 known substitutes for 2-172N304-75: AS568-172, AMS3304, 2-172-BUNA-N and 3 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 2-172N304-75?
2-172N304-75 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5331-01-023-7632. This indicates validated use in U.S. government and defense supply chains.
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